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@grpc/grpc-js & SO_REUSEPORT

See original GitHub issue

Is your feature request related to a problem? Please describe.

Another discrepancy with grpc-native we found on linux is inability to bind multiple grpc.Server instances on the same port in @grpc/grpc-js.

We have a requirement to load/unload services without downtime and since both implementations do not allow that what we did was bringing up a new instance of server with the new set of services and gracefully shutting down the previous instance. Worked like magic with grpc-native.

Didn’t dive too deep but it looks like the problem goes all the way to node’s http2 and even nghttp2. At least I couldn’t find any mentions of that option.

Issue Analytics

State:
Created 3 years ago
Reactions:1
Comments:10 (9 by maintainers)

Top GitHub Comments

1reaction

hugebducommented, Aug 19, 2020

UPD apparently it looks like this limitation is here for historical reasons. I just removed those lines and successfully mutated handlers map (via handlers.clear() and addService(...)) without restart.

have all my contract tests passing.

To sum up - any chance you will consider runtime mutation APIs or should I stay with my monkey patching on my own risk?

0reactions

murgatroid99commented, Nov 12, 2020

The title doesn’t exactly match what this issue ended up being about. It is primarily a request for the ability to add and remove services from a running server, and that is implemented in the latest release 1.2.0.

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